If the atheists (no matter how obnoxious) are correct in their beliefs, we just rot in the ground when we die, no problem. If Christians are right, I wouldn’t want to have been an atheist in life after I die.
Do you want to be a Christian if the Muslims are right?
And if Muslims are right, you wouldn't want to have been a Christian in life after you die...right?
(Thus illustrating the weakness of Pascal's Wager)
Perhaps the best thing move might be for everyone on both sides to take Thomas Jefferson's advice to heart:
But it does me no injury for my neighbor to say there are twenty gods or no God. It neither picks my pocket nor breaks my leg. - Notes on Virginia, 1782
While it's certainly fun to debate these issues, to invest a meaningful amount of time and effort trying to convince someone to change their mind regarding the existence (or non-existence) of God(s) strikes me as just silly. We certainly have far more substantive issues to deal with (the impending economic collapse comes to mind).